NAME

Parrot::Pmc2c - PMC to C Code Generation

SYNOPSIS

use Parrot::Pmc2c;

DESCRIPTION

Parrot::Pmc2c (and the subclasses defined in this file) is used by classes/pmc2c2.pl to generate C code from PMC files.

Functions

does_write($method, $section)

Returns whether a method writes.

count_newlines($string)

Returns the number of newlines (\n) in $string.

gen_ret($method, $body)

Generate the C code for a return statement, if the body is empty then make a cast if needed.

This method is imported by subclasses.

class_name($self, $class)

Returns the appropriate Parrot::Pmc2c subclass for the PMC ($self->{class}). $self is the hash reference passed to new(), and $class is Parrot::Pmc2c.

dynext_load_code($library_name, %classes)

$library_name is the name of the dynamic library to be created.

%classes is a map from the PMC names for which code is to be generated, to dump info (PMC metadata).

This function is exported.

Class Methods

new($self, $opt)

Returns $self as a new instance.

$self is a hash reference eval-ed from a *.dump file generated by classes/pmc2c.pl from a *.pmc file. It is bless-ed either into Parrot::Pmc2c::::Standard, or into one of the other special PMCs: default, delegate, Null, Ref or SharedRef.

$opt is a hash reference.

Instance Methods

get_vtable_section()

Creates a hash of all the method names containing vtable section. Called from init().

make_const($class)

If the PMC had its const_too flag set then this method is called in init() to to create the read-only set methods.

init($class)

Initializes the instance. $class is its class.

dont_edit($pmcfile)

Returns the "DO NOT EDIT THIS FILE" warning text. $pmcfile is the name of the original source *.pmc file.

decl($classname, $method, $for_header)

Returns the C code for the PMC method declaration. $for_header indicates whether the code is for a header or implementation file.

includes()

Returns the C #include for the header file of each of the PMC's superclasses.

full_arguments($args)

Prepends INTERP, SELF to $args.

rewrite_method($class, $method, $super, $super_table)

Rewrites the method body performing the various macro subsitiutions for vtable method bodies (see classes/pmc2c.pl).

body($method)

Returns the C code for the method body.

methods($line)

Returns the C code for the vtable methods. $line is used to accumulate the number of lines.

lib_load_code()

Returns the C code for loading a library.

pmc_is_dynpmc

Determines if a given PMC type is dynamically loaded or not.

init_func()

Returns the C code for the PMC's initialization method, or an empty string if the PMC has a no_init flag.

gen_c($file)

Generates the C implementation file code for the PMC.

$file is the name of the original source *.pmc file.

hdecls()

Returns the C code function declarations for all the methods for inclusion in the PMC's C header file.

TODO include MMD variants.

gen_h($file)

Generates the C header file code for the PMC.

$file is the name of the original source *.pmc file.

implements($method)

True if this class generates code for $method.

SUBCLASSES

Parrot::Pmc2c::Standard Instance Methods

Standard behavior.

body($method)

Returns the C code for the method body.

Parrot::Pmc2c::Standard::Const Instance Methods

Returns the C code for the method body.

body($method)

Overrides the default implementation to throw exception if the method writes.

Parrot::Pmc2c::Ref Instance Methods

implements($method)

Always true.

body($method, $line)

Returns the C code for the method body.

Overrides the default implementation to direct all unknown methods to the thing referred to.

Parrot::Pmc2c::SharedRef Instance Methods

SharedRef is like Ref but with locking.

implements($method)

Always true.

gen_ret($type)

Generate the C code for a return statement.

body($method, $line)

Returns the C code for the method body.

Overrides the default implementation to perform locking.

Parrot::Pmc2c::default Instance Methods

implements($method)

Always true.

body($method, $line)

Returns the C code for the method body.

Overrides the default implementation to throw an execption for unknown methods.

Parrot::Pmc2c::Null Instance Methods

implements($method)

Always true.

body($method, $line)

Returns the C code for the method body.

The Null PMC throws an execption for all methods.

Parrot::Pmc2c::delegate Instance Methods

implements($method)

Always true.

trans($type)

Used in signature() to normalize argument types.

signature($params)

Returns the method signature for $params.

gen_ret($type)

Generate the C code for a return statement.

body($method, $line)

Returns the C code for the method body.

The delegate PMC redirects all methods to bytecode.

implements($method)

Always true.

body($method, $line)

Returns the C code for the method body.

Overrides the default implementation to direct all unknown methods to the PMC in the first attribute slot.

Parrot::Pmc2c::Library

This class is a wrapper around a collection of PMCs linked in the same dynamic library. A degenerate case is having an unnamed library with just ne PMC, which is the case used by the Parrot core.

Parrot::Pmc2c::Library Instance Methods

new($opt, $vtable_dump, %pmcs)

$library = Parrot::Pmc2c::Library->new
    ( $options,     # hash refernce, the same passet to other constructors
      $vtable_dump, # vtable.dump
      pmc1        => $pmc1_dump,
      pmc2        => $pmc2_dump,
      ... );

Creates a new library object. If the $options hash contains a library key its value will be used for the library name.

write_all_files()

Writes C and header files for all the PMCs in the library, plus <libname>.c and pmc_<libname>.h if his object represents a named library.

gen_h

Writes the header file for the library.

gen_c

Writes the C file for the library.

SEE ALSO

classes/pmc2c2.pl

cpanm Make

perl -MCPAN -e shell
install Make